View source for Motorola MC68040

{{Infobox CPU
| name = MC68040
| manufacturer = [[Motorola]]
| family = [[Motorola M68000 Family]]
| architecture = 32-bit
| address bus = 32-bit
| data bus = 32-bit
| year introduced = 1990
| cache = 4K byte icache+dcache
| registers = 15 general 32-bit registers (8 data, 7 address)
| clock speed = 25, 33, 40 MHz
}}

The '''Motorola MC68040''' is a 32-[[bit]] [[microprocessor]] in the [[Motorola M68000 Family]], the successor to the [[Motorola MC68030]]. Its successor was the [[Motorola MC68060|68060]].

Performance was increased over earlier members in part by the increased use of [[pipeline|pipelining]] and [[cache|caching]]; the MC68040 included a six-stage pipeline, along with sepate 4K-byte caches for [[instruction]]s and data.

It was the first family member to include [[floating point]] on the main chip, but did not provide full IEEE-compatiable floating point: transcendental functions were not included, which limited its utility.

It was used in a number of [[Macintosh]] [[personal computer]]s, and also [[workstation]]s from [[NeXT Computer, Inc|NeXT]].

Downgraded versions which omitted the [[floating point]], and another also without the [[memory management]], were produced.

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[[Category: Motorola Microprocessors]]